TRD electronics UPD cabling

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TRD electronicsUPD cabling

• Wim de Boer, Chan Hoon Chung, Florian Hauler,
• Mike Schmanau, Andreas Sabellek, Georg Schwering
• IEKP - Universität Karlsruhe (TH)
• RWTH-Aachen I

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TRD Power Distribution
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new QM2 UPD-Box
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Assembly document

• Assembly document is almost finished.
• Definition of proper soldering and proper
  crimping by defining the correct tools.
• It shows cabling schemes and pictures of each
  kind of DC/DC converter and S9011 board.
• It defines cable twisting and application of
  cable ties.
• It shows the application of the terminal blocks
  and terminal block fixture.

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DC/DC converter cabling
Chassis (Shield) connection
Cable twisting bundles
Cable ties
Currently no glueing of cables to the PCB.
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S9011AUv2-DC/DC connections
Better sollution. Which kind of lug, pure tin
plated???
Current QM2 model
S9011AUv2 - DC/DC converter connections.General
rule No conductor should be kept unconnected in
space. gtChanges to QM2 model.
Wires, which are not used are pulled to ground
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S9011B
The U system is supplied by one 28V power port
with a 4-time cable redundancy.
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Soldering

• Soldering on the DC/DC converter pins is a
  delicate test which requires good workmanship.
• Generally only two wires can be soldered on one
  pin
• Soldering and desoldering cables from those pins
  multiple times should be avoided since the pins
  can be damaged.

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Backplane Shielding
Wires coming from the UPD-Box will be crimped to
gold plated ring lugs and screwed to the power
bugs on the backplane. For UBP a maximum of
three wires will be screwed to one power
bug. All DC/DC converter voltages are referenced
to each other by connections of the converter
grounds to shield.
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(No Transcript)
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TRD(U)-Electronics Overviewafter weight reduction
Ucrate TRD electronic crate UBP TRD
backplane UPD TRD power distribution box
V2
V2
UPSFE TRD power supply for front end UDR TRD
data reduction board JINF data concentrator and
link to higher DAQ for TRD UHVG TRD high
voltage generator UFE TRD front end UTE TRD
tube end UHVD TRD high voltage distributor
removed USCM USCM functionality covered partly by
JINFV2